package com.fieldchain.ex.fa100.utils.third.face;

import java.util.Arrays;

/**
 * Created by mafuxin on 2018/5/7.
 */

public class CheckIDCardUtil {

    private static String regexIsChinese = "[\\u4e00-\\u9fa5]{2,4}";

    /**
     *  check name
     *
     * @param name
     * @return
     */
    public static boolean checkName(String name) {
        if (name == null || !name.matches(regexIsChinese)) {
            return false;
        }
        return true;

//            Pattern pattern = Pattern.compile(regexIsChinese);
//            Matcher matcher = pattern.matcher(name);
//            return matcher.matches();
    }

    /**
     * check身份证号
     *
     * @param num
     * @return
     */
    public static boolean checkNum(String num) {
        if (num == null) {
            return false;
        }
        char[] id = {};
        for (int i = 0; i < num.length(); i++) {
            id = Arrays.copyOf(id, id.length + 1);
            id[id.length - 1] = num.charAt(i);
        }
        boolean IsFormRight = verForm(num);
        if (IsFormRight) {
            return verify(id);
        }

        return false;
    }

    private static boolean verForm(String num) {
        String reg = "^\\d{15}$|^\\d{17}[0-9Xx]$";
        if (!num.matches(reg)) {
            return false;
        }
        return true;
    }

    private static boolean verify(char[] id) {
        int sum = 0;
        int w[] = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};
        char[] ch = {'1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'};
        for (int i = 0; i < id.length - 1; i++) {
            sum += (id[i] - '0') * w[i];
        }
        int c = sum % 11;
        char code = ch[c];
        char last = id[id.length - 1];
        last = last == 'x' ? 'X' : last;
        return last == code;
    }
}
